@book{330189,
	author = {Berk, Sharon G. and Gunderson, John H.},
	title = {Wastewater organisms :},
	publisher = {Lewis Publishers,},
	year = {c1993.},
	address = {Boca Raton, Fla. :},
	note = {H.B},
	url = {http://www.loc.gov/catdir/enhancements/fy0744/93022831-d.html}
}